Ceramic is generally more conductive than glass. While both materials are insulators, ceramics can be engineered to have conductive properties, whereas glass typically maintains its insulating characteristics.

The conductivity of a material is determined by its ability to allow the flow of electric current. Ceramics can be made conductive through various methods, such as adding metallic additives or creating a composite structure that incorporates conductive particles. For instance, ceramic capacitors often contain conductive materials like silver or gold to enhance their performance. In contrast, glass is primarily composed of silica and other non-conductive compounds, which do not facilitate the flow of electricity.

According to a study by the American Ceramic Society, the resistivity of typical ceramic materials ranges from 10^9 to 10^12 ohm-cm, while glass has a resistivity of around 10^14 to 10^16 ohm-cm. This indicates that ceramics are up to two orders of magnitude more conductive than glass. The higher conductivity of ceramics is attributed to their crystalline structure, which allows for the movement of charge carriers, such as electrons or ions, under the influence of an electric field.

In practical applications, the conductivity of ceramics can be tailored to meet specific requirements. For example, in the electronics industry, ceramic capacitors are widely used due to their high capacitance values, low loss, and excellent stability over a wide range of temperatures. Glass, on the other hand, is more commonly used in applications where its insulating properties are crucial, such as in the construction of glassware and windows.

In summary, ceramic is more conductive than glass due to its ability to be engineered for conductivity, while glass remains an insulator due to its inherent composition. The significant difference in resistivity between the two materials highlights the versatility of ceramics in various technological applications.